def __init__(self, x):
p("A.__init__ called")
self.x = x
from ut import p
from fractions import *
F = Fraction
p("Fraction")
fr1 = F('0.2')
print fr1
print fr1.numerator
print fr1.denominator
p("num/den")
fr1 = F(2, 10)
print fr1
print fr1.numerator
print fr1.denominator
p('from float')
print Fraction.from_float(0.2)
#!/usr/bin/python
import copy
from ut import p
class A(object):
def __init__(self, x):
p("A.__init__ called")
self.x = x
p("OBJECT DIRECT ASSIGNMENT")
ob1 = A(10)
ob2 = ob1
p("OB1 and OB2 ID's")
print id(ob1), id(ob2)
assert(id(ob1) == id(ob2))
p("INITIAL OB*.X")
print ob1.x, ob2.x
p("ALTERED OB*.X")
ob1.x = 33
print ob1.x, ob2.x
p("OB's SHALLOW COPY")
ob3 = copy.copy(ob1)
while True:
divisor = next(counter)
if divisor >= current_dividend:
no_more_divisors = True
factors.append(divisor)
break
if current_dividend % divisor == 0:
current_dividend //= divisor
factors.append(divisor)
break
if no_more_divisors:
break
return set(factors)
def show_it(n: int) -> None:
factors = sorted(prime_factors(n))
print(f"{n} -> {factors} | {max(factors)}")
p("Prime factors")
show_it(8)
show_it(13195)
show_it(600851475143)
from ut import p
from functools import *
p("partial")
def myf(x, y):
print x+y
myfp = partial(myf, y=3)
myfp(10)
def dec1(f):
def wrapper():
f()
return wrapper
print "\n"
p("update_wrapper")
def dec2(f):
def wrapper():
f()
wrapper = update_wrapper(wrapper, f)
return wrapper
def somef2():
from ut import p
p("all")
print all([True, True, False])
print all([True, True, True])
p("any")
print any([0, 0])
print any([0, 1])
print any([1, 1])
p("any exclusive")
def anyex(itb):
return any(itb) and not all(itb)
print anyex([0, 0])
print anyex([0, 1])
print anyex([1, 1])
p("bin")
print bin(5)
p("bytearray")
print bytearray(100)
p("callable")
print callable(p)
from ut import p
from random import *
p("randint")
print randint(10, 20)
print randint(10, 20)
print randint(10, 20)
p("random")
print random()
print random()
print random()
p("choice")
print choice([222,333,444,555])
p("shuffle")
lst = [1,2,3,4]
shuffle(lst)
print lst
from ut import p
from pickle import *
class A(object):
def __init__(self):
self.a = 20
self.b = 30
# def __str__(self):
# return "zafuk"
p("DUMPS")
a = A()
pa = dumps(a)
a2 = loads(pa)
print a2.a
print a2.b